Environmental Science
During an equinox:

All of these
The days and nights are of equal length except at the poles
The earth is not tilted toward nor away from the sun
At noon the sun is overhead at the equator

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Environmental Science
Which among the following is related to the word Mesoderm ?

Anatomically advanced animals having all three germ layers
Binomial system of classification
No membrane-bound organelles, no peptidoglycan in cell walls, introns
Forms blood and bone (leads to complex internal organs)

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